Underframe.



3 BKEETS-SHBET 1.

Patented Mar. 26, 1912.

UNDERFRAME.

APPLICATION IILED we. 1, 1911.

V. M. SUMMA.

2/ mv: NTOR Anonuav WITNESSES WITNESSES) V. M. SUMMA.

UNDEBFRAME.

AIPLIGATION FILED AUG. 1, 1911.

Patented Mar. 26, 1912 3 SHEETS-SHEET 2.

7 INVENTUR M w" L: S

QTHQQMM ATTORNEY .v. M. SUMMA:

UNDERFRAME.

APPLICATION FILED AUG.1, 1911.

Patented Mar. 26, 1912.

3 SHEETS-SHEET 3.

.9 w w M I Q 1 v rm llfrllv WITNESSES ATTORN EV N TED" STATES PATENTOFFICE.-

vlc'ron'm; sonata-or ST. LOUIS, mssoniar, ASISIGNOR To a mean can ANDFOUNDRY COMPANY, or $1. LOUIS, mts'soum, A conrom'no or NEW JERSEY.

nunsrirnamn.

the follmv'ingis a full, clear, andexact descript-ion, such asWillenable others skilled in ar dWhifchfi appertains to make and 'larly'1n' the shape and relative arrangement to use: the same, reference bein'had to the drawings,which illustrate the I tl i connection between the'cent'er sill and the P1 dofglin 2-2 of urged transverse. vertif the".lane of line 3 3'ojf F ith dire'ction offtlie arroiv's; 'figj the' crossbearer construction. enlarged trans'verse ctional vie'iv ta "tithe planeof line" of Fi 1; ldtkin -in'ithe directionof the a i'i oxys, "andillustrating the bol= ster construction, Fig; 5 is a further en-Vlarge-d transverse; fragmentary sectional view taken on the planeofli'ne 55 of Fig. 1, lookingin the direction of the arrows, and

illustrating the details 'of construction of the central portion of thebolster and showing the relative positions occupied by the center silland truss members at the bolster. Fig. 6 is a similarly enlargedlongitudinal vertical sectional View taken substantially on the plane ofline 6 6 of Fig. 1, looking in the v direction'of the arrows, andillustratin details ofcon'st'ruction atth'e bolster. Fig. 7

is a similarly enlarged horizontal fragmentary sectiona-l vieivf takenon the plane of line 7 -7 ofFig. 6, and Fig. 8 is a horizontalsectionalview taken'on the lane of line 8-8 of Fig; 3,, illustratingetails of the cross bearer construction. i

The object of this invention is to provide -a car nnderframeoif'substantial construct-ion wherein the principal longitudinalmemelements of the bolster;

larly applicable to the design and arrangement of the longitudinalmembers.

The invention therefore resides particu of the parts comprising thecenter sill and of the truss. member of said center sill.

g It further resides in the form of strut elnployed between the centersill and the truss;

memberand the relation of said' strut to the n f ailer resides in theliov'eldesig ii' of draft sillsand in their connection with the;

Since the details of construct-ion of the 'underframe are identicalupon'opposite sids of the transverse median line thereof, only one sidelies been illustrated in thedrawings and it Wi '1 be understood that adescription of one side applies equally to both.

Referring to the details, the numerals 1 1 indicate the side sills; 2the end sills;

} 3 the body bolster; 45 the center sill; 5 one of the cross bearers ofwhich there may be as many as may he desired throughout the length ofthe car, and 6 the tie-bars intermediate the cross bearers and betweencross bearers and bolster.

The center sill 4 comprises preferably anI section as.7 and a channelsection as 8, the I'section beiug'disposed with its Web standingvertically and the channel having its web disposed horizontally-andfixed to the upper surface of the top flange of the I section and havingits flanges depending substantially equidistant upon opposite sides ofthe I sectlon.

' vThe I section may obviously corn rise a I 'pair'of channels placedback to beer or it der surface of the I section intermediate the 1bolsters so that its end portions only are fixed to the I section, andits intermediate having upper and lower flanges fixed reof the channelQareconnected by a pair of plates 11-11. The plates 11 are fixed topreferably spectivelyto thelower flange of splice the I sect-ion 7 andto the top surface of the web of the channel 9, intermediate the flangesof said channel. The I section 7 and the channel 9, and also the channel8, are extended through the bolster, the I section and the channel 9terminating short of the end of the channel 8 at a point between the endsill 2 and the forwardface of the bolster.

\Vithin the bolster the down-turnedflanges of the channel 8 and theupturned flanges the outer vertically alined' surfaces of said flangesand extend from a point behind the bolster, through -the bolster, andapproximatelyto the end of the channel 8.

The draft sills 1212 extend from the endsill 2 to a pointwithin thebolster, each of said sills comprising a channel section disposed withits web standing vertical and its top and bottom flanges projectingoutwardly. The inner surfaces of the webs of the draft ,sills engage theouter surfaces of the splice plates 11 and are fixed thereto,

7 y rivets,'some of which fix said plates to the flanges of the channelsections 8 and 9. Others of the rivets which fix the plates 11 to thedraft sills 12' serve also to connect the rear follower stops, as 13, ofthe draft rigging, to the inner surfaces of said plates. It will beobserved in this connection that each of said follower stops 13 is suported by rivets extending through a dou le thickness of metal, viz :-theplates 11 and the webs of the draft sills 12. As the splice platesextend through and be yondthe bolster at each end and the top' andbottom channels 8 and 9 also extend through and beyond the bolsters itis evident that these members form a box like structure for part of thelength. of the sill. It isevident also that the top and bottom channels8 and 9 with their flanges also form a box like structure for part ofthe length of the sill though the vertical sides of the box arenot'connectcd as in the box com rising the splice plates '11.

flanges as 1515 of the diaphragms are.

riveted directly to the plates 11 and-through said plates, to theflanges of the channels 8 and 9. The outer vertical flanges as 1616 tothe bottom flange of the I section 7 Each of the cover plates 17 and 18terminate short of the outer ends of the bolster diaphragms. The coverplates 17 and 18 are also fixed to the inner ends of the top and bottomflanges of the draft sills and serve to materially strengthen theconnection between the draft and center sills. Commercially rolledchannel sections,-'sueh as those employed to form the draft sills 12,are not manufactured of a height so near that of the I section centersill as to com ensate only for the thickness of the webs o the channels8 and9, and for this reason channel draft sills are employed which areofthe same height as the I section and small fillersas 12"-12 areinterposed between the top andbottom surfaces of the flanges of thedraft sills and the contiguqus surfaces of the cover plates 17 and 18,said fillers being of equal t ickness with the webs of the channels 8and 9, so as to present an even surface for the attachment of the coverplates.

- A center bearing casting 21 and side hear ing castings 21-2l are,fixed to the under surface of the bottom cover plate,l8, said centerbearing casting being provided with the usual central kingpin aperture22. v

The bottom cover plate 18, the web of the channel 9, and the bottomflange of the I section 7, are each formed with perforations as 23--23in ulinement with the aperture 22.

The web of the I section 7 is cut away as a flanged diaphragms as 27disposed upon opposite sides of the center sill. The inner verticalflanges 28 of the diaphragms are connected to opposite sides of the webof the I section of the center sill by throu h rivets. The outervertical flanges 29 of tile 35 are preferably of Z section though theymay diaphragms are fixed directly to vertical portions of the sidesills. The top flanges are connected together by a top cover. plate as31 which extends through a suitable aperture'32 formed in the web of theI section, said aperture being sufiiciently removed from the top flangeof the I section so that the cover plate extends beneath the lower edgesof the downturned flanges of the horizontally disposed channel 8.

There is a strut 10 at the point of each of the cross, bearers and theinner vertical flanges of the diaphragms, comprised in said crossbearers, are continued below the bottom flange of the I section of thecenter sill and are fixed-to opposite sides of the web of said strut bythrough rivets as at 32, a cutaway portion 33 being formed in each ofthe diaphragms to admit the flanges of the I section? andthe upperflange of the strut.

The webs of the diaphragms 27 are disposed with one of their verticalfaces approximately in the plane of a'vertical transverse edge, or end,of the strut 10 and a'connecting angle as 34 is fixed to the lower edgeof the web of each of said diaphragms and extends across the edge, orend, of the strut for efiectually binding the lower, or compression,portions of the diaphragms to gether.

The bottom flanges as 30'-1-30 of the dia phragms 27 are inclined fromthe side sills downwardly toward the truss channel 9 and engage thestrut 10 at a point spacedsom'ewhat above said truss. The side sills l1I comprise any convenient or desiredshap'e.

The Z sections illustrated are arranged with their webs standingvertically and their top flanges extending outwardly and adapted tosupport the side nailing strips as 3535 upon their top surfaces. The topsurfaces of said top flanges are arranged substantially in the samehorizontal plane as the top surfaces of the upper flanges 30 of thecross bearers and are therefore below the level of the top surface ofthe center sill and .the bolsters.

The top flanges of both the bolsters and cross'bearers are horizontalfrom side sill to side sill so that the end flanges 16 of the bolsterdiaphragms project above the side sills and form pockets for thenailingstrips 35. Upstanding angle sections as 3G---36 are fixed to the webs ofthe side sills and to the webs of the diaphragms 27 at each of the crossbearers, for the same purpose.

hat I claim is; v 1. In a car underframe, the combination ,with abolster, of draft sills extending thereinto, and a center sill lappingthe draft sills and comprising an I section and a channel section, saidchannel section being fixed to said I section and to the draft sillswithin the bolster.

trally' fidisp osed 2. In a car undcrframe, the combination with spaceddraft sills, of a composite single.

center sill comprising a horizontally disposedfflanged member fixed toeach of said draft sills, and a vertically disposed member fixed to the.under side of said horizontal member;

3. In a car underframe, a longitudinal sill comprising a verticallydisposed member and a horizontally disposed member fixed to the upperedge of said vertical member, said horizontal member having marginalflanges depending substantially equidistant upon opposite sides of saidvertical member.

4. In a car underframe, the combination with a bolster, of draft sills,and a composite centersill extending through said bolster andlapping'l-said draft sills, said center 'sill c omprisin'g a vertically,disposed member and a horizontally disposed mem'-' her, one of saidmembers having flanges extendingzupo'nf oppo ite sides of said othermember'landf eacli' of said members extnding'alorigtlie' udina'l median:liiieof the underf m wait a to termi e-d sagree co'mposite' cen' prisingener ics was top A and vert cal web cen member-and a horizontallydisposed member, said horizontally disposed member having.vertical'flangessubstantially e'qui-dis tant upon opposite sides of saidVertically disposed members.

7. In a car underframe'the comlmi'atiou with a bolster, of draft sllls,and a composite center" 'sil1 extending through said bolsterand'la-pping' said draft sills. said center sill 'compri'singavertically disposed member and a horizontally disposed mem-. her, saidhorizontally disposed member having vertical flanges lapping oppositesides of said vertically: disposed member.

8. In a car underframe, the combination with a bolster, of draft'sills,and a composite center sill extending through said bolster and lappingsaid draft sills. said center sill comprising avertically disposedmember and a horizontally disposed member, said horizontally disposedmember having vertical flanges de nding upon opposite sides ofjsaidvertical y disposed member.

s'ection' extendi urrea ist-dial is said 9. In acar underframe, acentersill comrisingan I section, and a truss member or said center, sill,said truss member comprising a horizontally disposed flanged memberfixed-to said I section at its ends and spaced therefrom intermediateits ends,

v the flanges of said truss member extending pwardly' upon oppositesides of said I see- 10; In a car underframe, a single centersillcomprising a. vertically disposed I-section, a truss member for-said center sill,

- I said truss member comprising a horizontally disposed flanged memberfixed to said I section at its ends and spaced therefrom intermediateits ends, and an I section strut between said center sill and truss, thewebs of said I section being in vertical alinement longitudinally of theunderframe.

- 11. In a car underframe, the combination I section, a horizontallydisposed flanged truss member for said center sill spaced from saidcenter sill intermediate said bolsters, and a strut between said center'sill rand trussinember, said strut compris ,ing an I section disposedwith top flange fixed to said center sill and bottom flange fixed tosaid truss member. a i Y a 12. In a car underframe, asingle center sillcomprising' a vertically disposed flanged center 5111 member, ahorizontally disposed truss member therefor, and a flanged strut betweensaid center sill and truss, said strut having its web disposedsubstantially in vertical and longitudinal alinement with the web ofsaid center sill member. I

' 13. In a car underframe, an I section center 'sill member, ahorizontally disposed channel section truss member therefor, and a strutbetween said center sill member and truss member, said strut comprisingan I section with its web disposed substantiallv in the same verticalplane as the webof the center sill member.

14. In a car under-frame, an I section cen ter sill member, ahorizontally disposed flanged truss member therefor. aml a strut betweensaid center sill member and truss member, said strut comprising an Isection with its web disposed substantially in'thc same.vertical'plane'as the web'ot the center sill member, and having its topflange fixed to said center sill and its bottom flange fixed to the webof said truss member.

15. In a car under-frame, the combination with a bolster, of draftsills, and a composite center sill extending through said' bolster, saidcenter sill comprising a horizontally disposed member formed withvertical flanges fixed to said draft sills'wilh'in said bolster, and avertically disposed member formed with horizontal flange fixed to saidhorizontally disposed member.

16. In a car underframe, the combination with draft sills, of acomposite center sill comprising a horizontally disposed member fixed tosaid draft sills, and a vertically dis posed member fixed to saidhorizontally disposed member spaced intermediate said draft sills, and atruss member for said con-- teri sill being fixed thereto and to saiddraft sil s.'

'17. In a car underframe, the combination with draft sills, of acomposite center sill comprising a horizontally disposed channel sectionfixed to said draft sills, and an I section fixed to said channelsection, and a truss memberfor said center sill fixed thereto and tosaid draft sills.

18. In a car under-frame, the combination with draft sills, of acomposite center sill comprising a horizontally disposed channel sectionfixed to said draft sills, and an I. section fixed to the web of saidchannel section, the flanges of said channel lapping opposite sidesof'said I section, and a channel truss member for said center sill fixedto said draft sills.

19. In a car underframe, a longitudina sill comprising a verticallydisposed memher and a horizontally disposed member, and a truss memberfor said sill, said truss sill, said truss member combining with saidsplice plates and oneof said center sill members to form a box-likestructure adapted for attachment of said. bolster.

21. In a car underframe, the combination withdraft sills and a bolster,of a composite center sill comprising a horizontally dis posed memberand a vertically disposed I section centrally disposed, and a trussmemher for said center sill, said truss member combining with one ofsaid center sill members to form a box-like structure adapted forattachment of said bolster and draft.

sills.

22. In a car underframe, the combination with a bolster, of draft sillsextending thereinto. a composite center sill, extending rela-- livelycentrally between said draft sills, comprising a horizontally disposedmember formed with flanges tixed to said draft sills, a vertical web anda truss member for said center sill, said truss member combining withsaid horizontally disposed center sill member to-form abox-like.structure adapted for attaclnncnt of said bolster.

23. In a car underframe, the con'lbinat-ion with a lmlster, of draftsills extending there into, a composite center sill comprising ahorizontally disposed member formed with flanges fixed to said draftsills, and an I section fixed to said horizontally disposed member, atruss member for said center sill, said truss member combining with saidhorizon tally disposed member to form a box like structure inclosin saidI section, and means connecting said orizontal member with said trussmember adapted fol-attachment with" said bolster..

24. In a car underframe, the combination I with draft sills, of acomposite center sill comprising a horizontally disposed member and avertically disposed member, said vertically disposed member having aking-pin aperture formed therein.

'25. In a car underframe, the combination with a bolster, of a centersill e ending through said bolster, said center s" 1' comprising avertically disposed rolledlh'anged member formed with a king-pinreceiving aperture.

26. In a car underframe, the combination with a'bolster, of acentersillextcnding through said bolster, said 'center'sillcolnprising avertically disposed rolled; flangedmember form ed'with aki'n'g-pi'n'receiving aperture through its flange and having its web cut awayadjacent said aperture, and means fixed to said web adapted to form avertical extension of the walls'of said aperture.

27. In a car underframe, the combination with a bolster, of a centersill extending through said bolster, said (enter sill comprising avertically disposed member and a horizontally disposed member, saidfirst mentioned member being formed with a king-pin receiving aperture.

28. In a car under-frame, the combination pin receiving aperture inalinement. with said first mentioned aperture.

30. In a car undcrtrame, the combination with a composite center sillcomprising a vertically disposed member and a horizontally disposedmember, of a truss member for said center sill, said truss member beingdisposed centrally beneath said vertically disposed member. bolsterdiaphragms fixed to said truss member. and a bolster cover plate fixedto said truss member.

31. In a car undert'rame. the combination.

with a coi'iiposite renter sill -ori'iprising a vertically disposedmember; and a horizontally disposed member, of a truss member for saidcenter sill, bolster diaphragms fixed to said truss member, and abolster coyer platefixed to said truss member, said cover plate and saidtrus'smember being each formed with .a king-pin receiving aperture.

32-. In a car under-frame. thecombination with a composite center sillcomprising a vertically disposed ,member and'a horizontally disposedmember,.of a truss member for said center sill, bolster diaphragms fixedto said truss member, a top cover plate fixed to said diaphragms and tosaid horizontally disposed member, and abottom cover plate fixed to'saiddiaphragms and to said truss member. 4

33. In a car' underframe, the combination with a composite center sillcomprising a vertically disposed member and a horizontally disposedmember,'of a'truss .fmember 01- said center sill, bolster diaphragms fxed to said truss member, a top cover plate fixedto said diaphragms andto horizontally dis ose d 'member, a bottom cover plate fixe p to saiddiaphragms and said truss member, and aimed kingpin" receiving aperturesformed through said bottomicover plate, said truss member and theyertically disposed member of said center sill.

'with a composite center sill com rising a horizontally disposed memberan a vertically disposed member, of a truss member therefor, a strutbetween said center sill and truss, and a cross bearer member extendingthrough the vertically disposed member, said cross bearer lapping saidstrut.

36. In a car underframe, the combination with a com )osite center sillcomprising a horizontally disposed member and a vertically disposedflanged member, of a truss member therefor, a strut between said centersill and truss member, said strut comprising a flanged member disposedwith its web in alipement with the web of. the ver tically'dis msedmember of the center sill, a cross bearer extending in part. throughsaid vertically disposed member and in part extending past and beingfixed to the web of said strut.

37. In a car inulerframc, the combination with a composite center sillcom rising a horizontally dis )osed member an a vertically disposedanged member, of a truss '34.In a car underframe, the combination membertherefor, a strut between said center sill and truss; said strutcomprising an I section disposed with its web. in alinement site sidesof sa-idstrut and a compression.

member extending past the web. of said strut 10 and being fixed to saiddiaphragms. 1

In witness whereof I have hereunto set my hand in the presence of-twowitnesses.

VICTOR M. SUMMA. Witnesses: I

OSCAR Hoommnc, WILLIAM MORRISON.

